How to tell if your laptop/notebook/ultra books almost dead?

Laptops don`t go dead.
I mean with age and power they lack features of more new laptops, and are less powerful.

The performance degrades through the user intervention.
A computer or laptop does not think in the same way a human does.
It only does most of the time what it is told to do.
It is not a mind reader or thinks to it`s self hang on i`m a bit cluttered here let`s sort it out.

Frankly i`m amazed that when people who use a laptop or computer forget this.
And later complain how slow it is. well the computer did not do it to it`s self so who did?.

I won`t answer that one because it is clearly ever dent on the who part.

Just like a car or anything else it must be maintained by the user to keep it running right.
Or it will slow down, miss fire on a cylinder reducing power. So you give it a regular service to keep it running right.

The same apply s to a laptop, clean it, in respect to the amount of junk programs taking up memory not needed that are running. slowing a computer down.
Regular defrag of the hard drive to speed up data transfer. Upgrades memory just like a car. Make it lighter and faster.

Adding ,tuning, servicing, remove the junk in it weighing it down.

There`s a thought.